Rorze RD-323MS User manual
Be sure to read the following precautions for your safety.
This section describes safetyprecautions to avoid danger to youor someone else, to avoid damage of your property,
and to use this product safely.
Precautions before using this product
This product is designed to be incorporated into general industrial machinery, and is NOT developed to be used in devices
such as aerospace machines, security equipment, or other safety devices where a failure or malfunction of this product may
directly threaten human lives or health.
Even if you use this product in a general device, make sure that you establisha sufficient level of safetyin your device by
incorporating a protectionfunctioninto your machine and guarantee your products based onsafety tests on the whole set.
If you will use this product in devices like the above, please contact us. It should be noted that RORZE will not be
responsible for any damage caused by using a product in sucha device without the consent of RORZE.
WARNING
Ignoring the following warnings may cause a death or a serious injury.
◇Use this product at places where no explosive or flammable stuff exist nearbyand no water is splashed on the product.
Otherwise it may cause a fire and/or an injury.
◇Turn off the power before moving or wiring the product. Otherwise you may sufferinjuries or electric shocks.
◇Do not forcibly bend, pull, or nip lead wires. Otherwise they may cause an electric shock, fire, and/or failure.
◇Do not use lead wires with their sheathdamaged. Otherwise they maycause an electric shock, fire, and/or failure.
◇Make sure that wires are correctly and securely connected at electrical terminals. Otherwise they maycause an electric
shock, fire, and/or failure.
◇Do not touch the internal parts of this product.
◇Do not disassemble or modify this product.
◇Do not wire or operate a product with wet hands. Otherwise it may causes electric shocks.
◇Assign a qualified person to transport, install, connect, operate, maintenance, or check this product. Otherwise it may
cause anelectrical shock, a fire and/oran injury.
CAUTION
Ignoring the following cautions may result in personal injuries and/or property damages.
◇Make sure that the delivered product is the one you ordered. Installing the wrong product may cause a fire and/or a
failure.
Check the following items before turning on the power.
◇The output voltage of the power supplyis as described in the specifications.
◇The voltage/current of the input/output terminals conforms to the ratings in the specifications.
◇Input/output terminals are not incorrectly wired or accidentally short-circuited.
◇Do not use with the motor except the stepping motor.
◇Operate the rated current of stepping motor within the specified input current limits only.
◇Please use the wire rod with the cross-section area corresponding to current value.
◇Because this product generates heat, please make it stick to metal board etc. or put the fan and radiate enough.
◇Whenconnecting with terminal block, use a screwdriver whose tip fits an adjustmentslot. Tighten the screwin the
torque of less than3.5kgf･cm(0.35N･m)(proper torque is 2.5kgf･cm(0.25N･m)).
◇When you run a product for the first time, make sure that the operationcan be stopped immediately under an emergency
situation.
Ignoring the above cautions may cause a fire and/or a failure.
◇Immediately turn off the power, if you hear an unusual noise. Otherwise it maycause a fire and/or aninjury.
◇Do not touch this product whenit is inoperation, as a malfunction may occur.
◇Do not carry this product by holding its terminal blocks or lead wires. When the product is accidentally dropped,it may
cause a personal injury.
◇Do not place this product in unstable positions. When the product is accidentally dropped, it may cause a personal
injury.
Under some circumstances, ignoring the precaution described in the CAUTION section may also result in a death or
a severe injury.
Follow the above precautions described in both the WARNING and the CAUTION section.
！
！
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Table of Contents
１．Description...............................................................................................１
２．Features ..................................................................................................１
３．Specifications...........................................................................................２
４．Part Name...............................................................................................２
５．Current Adjustment ..................................................................................３
5-1 Run Current Adjustment Trimmer..................................................３
5-2 Stop Current Adjustment Trimmer.................................................３
６．Speed Setting..........................................................................................４
6-1 High Speed Trimmer.....................................................................４
6-2 Low Speed Trimmer .....................................................................４
７．Grow Time Trimmer ................................................................................５
８．Terminals.................................................................................................５
8-1 STOP/START (Input).....................................................................５
8-2 CW/CCW (Input)...........................................................................５
8-3 SPEED (Input) ..............................................................................５
8-4 GND..............................................................................................５
8-5 GROW OUT (Output)....................................................................６
8-6 CLOCK OUT (Output)...................................................................６
8-7 ALARM (Output)............................................................................６
９．ALARM LED............................................................................................６
１０．Dip Switches............................................................................................７
10-1 Microstep/Clockout Resolution Selection Switch (D1 to D5)........７
10-2 Current Range Switch (3A/1.5A).................................................７
１１．Timing Diagrams......................................................................................８
１２．Input/Output Circuits ................................................................................９
12-1 STOP/START, CW/CCW (Input circuits)......................................９
12-2 SPEED (Input circuit)..................................................................９
12-3 GROW OUT, CLOCK OUT, ALARM (Output circuits).................９
１３．Wiring Diagram.....................................................................................１０
13-1 Suitable Motor..........................................................................１０
１４．Heat Dissipation....................................................................................１１
１５．Other Functions....................................................................................１１
15-1 Auto. current down...................................................................１１
15-2 Over heating protection circuit..................................................１１
15-3 Over current protection circuit..................................................１１
15-4 Low voltage protection circuit...................................................１１
１６．Consumption Current............................................................................１１
１７．Relationship between Frequency(pps) and Motor speed(rpm)...............１２
１８．Dimensions ...........................................................................................１２
１９．Difference from RD-323MS and RD-323M50(M10) ...............................１３
19-1 Difference of wave form...........................................................１３
19-2 Stop position error (at low speed) ...........................................１３
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1. Description 2. Features
RD-323MS 1
INSTRUCTION MANUAL FOR RD-323MS
１．Description
Custom LSI and hybrid circuitry makes this driver ultracompact and power efficient. Therefore, by
utilizing a DC power supply of 24V or 36V (as is common to solenoid valves, etc.), several units can
be connected to a simple programmable controller or personal computer with great economy of
wiring.
The RD-323MS is high resolution step motor driver featuring selectable microstep. The user can
select from 50, 64, or 80 microsteps/step using dip switches D1 to D5.
Also, the unique feature of this driver is its user selectable clockout for 1 to 80 pulses/step (1 to 80
pulses output per basic step angle).
２．Features
･High power (3A/Phase max.)
･Large supply voltage range (18 to 40VDC)
･Selectable microstep (50, 64, or 80 microsteps/step)
･Selectable clockout (1 to 80 pulses/step)
･Because of built-in oscillator, RD-323MS can combine with PLC, micro computer, etc. as well
as Rorze controller easily.
･Can change RPM by analog voltage of SPEED terminal
･Circuit protections to protect against overheating, over current and low supply voltage
･Auto. current down to reduce heat generation when motor is stationary
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3. Specifications 4. Part Name
2
３．Specifications
Supply voltage Single 18 to 40VDC (including ripple)
Supply current Approx. 1.2 times rated coil current of motor (max.)
Motor current 0.3 to 3A/phase (Adjustable by Run Current Adjustment Trimmer)
Drive method Unipolar, constant current chopper method
Excitation method Microstep
Microstep resolution 50, 64, or 80 microsteps/step
Clockout resolution Selectable clockout 1 to 80 pulses/step
Position repeatability ±1 microstep with no load in one direction
(with 50 microsteps/step)
Auto. current down 0 to 80% of the run current after about 0.3 seconds of inactivity
according to stop current setting (Setting at shipment is 50%)
Protective circuitry Overheat, over current and low supply voltage protection
Oscillating frequency 700 kpps max.
Accel.,/Decel. time 20msec to 3sec
(when you change SPEED terminal from 0V to 5V.or from 5V to 0V)
Speed change function Analog (Variable by analog voltage of SPEED terminal)
Weight Approx. 250g (8.8oz.)
Outside dimensions 27.5H x 105W x 56Dmm (1.1”H x 4.1”W x 2.2”D)
４．Part Name
Fig.1. Name Plate
POWER SUPPLY
MOTOR OUTPUT
PART OF CLOCKOUT DIP SWITCH ALARM LED
RESOLUTION
RUN CURRENT Adjustment Trimmer STOP CURRENT Adjustment Trimmer
INPUT/ OUTPUT
GROW TIME Trimmer
LOW SPEED Trimmer HIGH SPEED Trimmer
GND
CA
CB
A
A
B
B
010010
1
00 00
1
0
0
0
0
1
1
0
0
0
1
0
1
0
0
0
0
11
1
0
DC
５
0
5025
1
64
1
1
－＋ Ｓ
Ｌ－＋
RUN STOP
ALARM
CLOCKOUT
GROWOUT
GND
SPEED
CW/CCW
STOP/START
GND
80
DIVISION
CURRENT
18V
-
40V LOW
SPEED GROW
TIME HIGH
SPEED
1
－Ｄ１
－Ｄ２
－Ｄ３
－Ｄ４
－Ｄ５
３Ａ
0-1
1.5A
RD-323MS
2P MICRO STEP DRIVER
MADE IN
JAPAN
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5. Current Adjustment
RD-323MS 3
５．Current Adjustment
Fig.2. Current Setting Trimmers
5-1 Run Current Adjustment Trimmer
Caution
Please use after adjusting the current within the motor rated current.
Exceeding the rated current causes the failure of motor or fire.
This is used to adjust the stepping motor drive current and in general it makes equal to the rated
current. (Setting at shipment is 0A.)
If a motor is used at a high rpm with a lower-than-rated torque, better efficiency and less
temperature rise can be obtained by using the motor with a current lower than the rated value.
(Note: As the current decreases, the torque will lower.)
The drive current changes relative to the dial. The value of the setting will be ±10 % of the set
value. (Use 1.5A setting when the motor rating is less than 1.5A. Set the amp. dip switchto 1.5A
side, because it makes current adjustment easier.)
Fig.3. Run Current Setting
5-2 Stop Current Adjustment Trimmer
This trimmer can adjust holding current when the motor is stationary. (Current after auto. current
down works.) You can set the stop current to any value between 0 and 80% of the run current by
adjusting Stop Current Adjustment Trimmer. (Setting at shipment is 50 %.)
Fig.4. Stop Current Setting
！
CURREN
T
0 10 0 10
RUN STOP
0
20
40
60
80
100
012345678910
Stop Current Adjustment Trimmer Graduations
Percentage to run current(%
)
Dip switch
3A
1.5A
012345678910
Run Current Adjustment Trimmer Graduations
Drive Current (A)
1
2
0
3
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6. Speed Setting
4
６．Speed Setting
☆Adjustment of Low/High Speed
Owing to the structure of the internal circuit, setting Low
Speed volume will affect the high speed change and vice
versa. Therefore, when setting oscillating frequency
please follow the below instructions.
1) Connect STOP/START terminal to GND potential.
2) Turn SPEED terminal to Low level and then set Low Speed volume to your desired minimum
frequency.
3) Turn SPEED terminal to High level and then set High Speed volume to your desired maximum
frequency.
4) Execute 2) again.
6-1 High Speed Trimmer
You can set the maximum setting of the rotation using this trimmer. The high setting can be set to
any value between 50k to 700kpps. The motor runs at maximum setting when the speed input is at
5V. Figure 6 shows one setting with 700kpps and another with 50kpps.
Fig.6. High Speed Setting
6-2 Low Speed Trimmer
You can set the low speed rotation using this trimmer. The setting will affect the high speed setting
by 14%. Speed input voltage ±0.7V
Speed adjustment range = ────────────── ×High speed setting
5 Low speed setting range
Fig.7. Effect of Low Speed Setting
Fig.5. Speed Adjustment Trimmers
High Speed Trimmer
Max.
Min.
0
200
400
600
800
1000
012345
Speed input voltage (V)
Frequency（kpps）
Low Speed Trimmer: Center
Low Speed Trimmer
Max.
Center
Min.
0
200
400
600
800
1000
012345
Speed input voltage (V)
Frequency
（kpps）
High speed VR: Max.
High Speed Trimmer: Max.
LOW GROW HIGH
SPEED TIME SPEED
－＋L S －＋
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7. Grow Time Trimmer 8. Terminals
RD-323MS 5
７．Grow Time Trimmer
Trimmer to adjust the duration of time in which the motor’s rpm changes from the stationary state to
the rpm set for High Speed and then to the rpm set for the Low Speed.
Adjustable range: 20msec. to 3sec. (When SPEED voltage is changed from 0 to 5Vdc or from 5 to
0Vdc.)
Fig.8 GROW TIME
８．Terminals
8-1 STOP/START (Input)
Turning STOP/START input to Low level (connecting to GND potential) will make the motor start to
run and the driver outputs CLOCK OUT signal to motor.
Turning STOP/START input to High level (open) will make the motor stop and the driver stops to
output CLOCK OUT signal.
8-2 CW/CCW (Input)
Turning CW/CCW to Low level (connecting to GND potential) will make the motor rotate in CCW
direction.
Turning CW/CCW to High level (open) will make the motor rotate in CW direction.
Fig.9 Direction of Rotation
8-3 SPEED (Input)
This input is used for changing speed. A voltage input between 0 to 5Vdc would change the speed
from low speed to high speed. The input is maintained at 5Vdc with a 4.7kΩpull-up resistor.
8-4 GND
Use GND along with SPEED input for remote speed control. As a good practice, use a shielded
wire. Refer to Fig. 10
Fig.10 Remote Speed Control
CCW CW
SPEED
TIME
LOW SPEED
Adjustable by Grow Time Trimmer
HIGH SPEED
SPEED
GND
SHIELDED WIRE 10kΩ
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8. Terminals 9. ALARM LED
6
8-5 GROW OUT (Output)
GROW OUT output is turned ON when the motor changes from a stationary state to the speed set
at High Speed trimmer. Therefore, by using the number of pulses from acceleration to GROW
OUT output duration, it is possible to calculate deceleration time.
This feature makes the driver control only by setting total pulse using RC-204A and RC-207A.
Fig.11 GROW OUT Output
8-6 CLOCK OUT (Output)
The CLOCK OUT is clock pulse output terminal.
You can select output pulse from among 1 to 80 pulses/step by using dip switches.
The duty of output clock pulse is approx. 40 to 60%.
Note: The excitation method of motor is any of 50, 64, or 80 microsteps/step.
8-7 ALARM (Output)
This terminal puts out a L signal when Overheating protection circuit is in operation.
(Open collector output is turned ON.)
９．ALARM LED
This will light when Overheating protection circuit is in operation.
SPEED
TIME
Ｔ2Ｔ1
GROW OUT
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10. Dip Switches
RD-323MS 7
１０．Dip Switches
Fig.12. Dip switches
10-1 Microstep/Clockout Resolution Selection Switch (D1 to D5)
Caution
Do not set the dip switches except the below table.
It causes malfunction or failure.
The table below shows various combinations of microsteps (50, 64, or 80) and clockout.
Select the one that is most applicable to your application using dip switch D1 to D5.
1
Step angle = Motor basic step angle ×───────────
Microstep resolution
Note: The excitation method of motor is any of 50,64 or 80 microsteps/step.
･Microstep resolution: Number of resolution per basic step angle
･Clockout resolution: Number of pulse output per basic step angle
Dip switch setting table:
D5 D4 D3 D2 D1 Clockout
Resolution Microstep
Resolution(M)
０ １ ０ ０ ０ ６４ ６４
０ １ ０ ０ １ ３２ ６４
０ １ ０ １ ０ １６ ６４
０ １ ０ １ １ ８ ６４
０ １ １ ０ ０ ４ ６４
０ １ １ Ｘ １ ２ ６４
０ １ １ １ ０ １ ６４
D5 D4 D3 D2 D1 Clockout
Resolution Microstep
Resolution(M)
１ ０ ０ １ ０ ８０ ８０
１ ０ ０ １ １ ４０ ８０
１ ０ １ ０ ０ ２０ ８０
１ ０ １ ０ １ １０ ８０
１ ０ １ １ ０ ５ ８０
D5 D4 D3 D2 D1 Clockout
Resolution Microstep
Resolution(M)
０ ０ １ ０ ０ ５０ ５０
０ ０ １ ０ １ ２５ ５０
10-2 Current Range Switch (3A/1.5A)
Sets the motor run current range when setting the run current adjustment trimmer to the max. value.
(See Fig.3)
0-1
D1
D2
D3
D4
D5
3A 1.5A
Ｘ: could be 1 or 0
！
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11. Timing Diagrams
8
１１．Timing Diagrams
Fig.13. Timing Diagram Ⅰ
Fig.14. Timing Diagram Ⅱ
T2: Changing direction of rotation from CW to CCW or vice versa should be done at least 10msec
after stopping. (T2＞10msec)
T3: If the motor has been idle for more than 0msec, the direction can be changed at any time.
(T3≧0msec)
T2 T3
CLOCK OUT
STOP/START
CW/CCW
HIGH SPEED
LOW SPEED
T1
STOP/START
5
V
SPEED 0
V
HIGH SPEED
LOW SPEED
GROW OUT
＋
A phase current
－
＋
B phase current
－
Current down
0.3sec
T2
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12. Input/Output Circuits
RD-323MS 9
１２．Input/Output Circuits
Caution
Do not exceed max. rated current･voltage of each I/O circuit.
It causes failure or malfunction.
12-1 STOP/START, CW/CCW (Input circuits)
Low Level: Less than 1.5V
High Level: More than 3.5V
Fig.15. STOP/START, CW/CCW Input Circuits
Terminal R
STOP/START 10KΩ
CW/CCW 2.2KΩ
12-2 SPEED (Input circuit)
Fig.16. SPEED Input Circuit
12-3 GROW OUT, CLOCK OUT, ALARM (Output circuits)
VOL(low level output Ic=10mA) = 0.38V
VOL(low level output Ic= 1mA) = 0.22V
Fig.17. GROW OUT/CLOCK OUT/ALARM Output Circuits
Do not supply the voltage more than 50V, the current more than 100mA to this terminal.
Inside
CMOS
74HC
STOP/STAR
T
CW/CC
W
1000
p
F
5V
R
2.2KΩ
Inside
GROW OUT
CLOCK OUT
ALARM
Vceo = 50V
Ic = 100m
A
10KΩ18Ω
10KΩ
！
OP-AMP
＋
－
SPEED
Inside
0.01μF
5V
33KΩ
4.7KΩ
GND
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13. Wiring Diagram
10
１３．Wiring Diagram
Caution
Make sure that there are no mis-wiring and short-circuiting and do not turn power
on before wiring correctly. There is danger of fire or failure.
Please tighten the terminals with the torque of less than 3.5kgf･cm (0.35N･m).
Please use the wire rod with the cross-section area corresponding to current value.
※In microstep mode, a sine curve current which made effective value the run current value set by
run current adjustment trimmer flows. The maximum current value which runs on the lead wire
of motor is run current ×2.
ex.) Run current: 3A →Max. current value is 4.2A. （4.2(A)2(A)3 =× ）
Use twisted wire pair for the signal input wiring. Please tighten the terminals less than 3.5kgf･cm
(0.35N･m). (Proper torque is 2.5kgf･cm (0.25N･m))
Fig.18. Wiring Diagram
13-1 Suitable Motor
You can use any HB(hybrid) or PM(permanent magnet) stepping motor with rating of 0.3 to 3A/ph.
Select motors with rating of less than supply voltage ×0.7(V).
RORZE 2-Ph Stepping Motors (Torque -- 1kgf･cm = 13.9oz･in Inertia -- 1g･c㎡= 5.46745×10-3oz･in2)
Holding
Torque
Model No. (kgf･cm) (N･m)
FullStep
Angle
(Degree)
Rated
Current
(A/phase)
Rotor
Inertia
(g･c㎡)
Resistance
（Ω） Inductance
(mH)
RM2414S/D 1.4 0.14 1.8 1.5 30 1.3 0.96
RM2424S/D 2.4 0.24 1.8 1.5 53 1.75 2.2
RM2621S/D 2.1 0.21 1.8 3.0 57 0.36 0.48
RM2640S/D 4.0 0.39 1.8 3.0 100 0.6 0.8
RM2690S/D 8.0 0.78 1.8 3.0 210 0.77 1.58
RM26A3S/D 13.0 1.3 1.8 3.0 360 0.9 2.2
Color of RORZE motor’s wire Terminal
CA CB A A B B
RORZE MOTOR Black White Red Yellow Blue Orange
Programmable
Controlle
r
Output Circuit
Input Circuit
Counter
Input Circuit
A CA A B
CB
B
GND
18-40VDC
M
M
8 LEAD WIRE MOTOR 6 LEAD WIRE MOTOR
GND
CA
CB
A
A
B
B
010010
1
0000
1
0
0
0
0
1
1
0
0
0
1
0
1
0
0
0
0
11
1
0
DC
５
0
5025
1
64
1
1
－＋ Ｓ
Ｌ－＋
RUN STOP
ALARM
CLOCKOUT
GROWOUT
GND
SPEED
CW/CCW
STOP/START
GND
80
DIVISI ON
CURRENT
18V
-
40V LOW
SPEED GROW
TIME HIGH
SPEED
1
－Ｄ１
－Ｄ２
－Ｄ３
－Ｄ４
－Ｄ５
３Ａ
0-1
1.5A
RD-323MS
2P MI CRO S TEP DRIVER
MADE IN
JAPAN
！
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14. Heat Dissipation 15. Other Functions 16. Consumption Current
RD-323MS 11
１４．Heat Dissipation
Caution
Please dissipate heat generated by driver and motor enough.
If it is insufficient, temperature rise causes malfunction, failure or fire.
Keep the motor’s maximum case temperature below 100℃and driver’s below 60℃by adjusting
the drive current or by installing a cooling fin, fan, etc.
１５．Other Functions
15-1 Auto. current down
This works after about 0.3 seconds of inactivity. Setting stop current lower to run current will
prevent heat generation. However, if stop current is high, position gap will decreases. (See fig. 4)
15-2 Over heating protection circuit
This works when the internal temperature of the driver reaches about 70℃. It turns ALARM output
ON and ALARM LED will be turned ON. Furthermore, if the temperature keeps on rising, it stops
motor compulsively and works auto. current down. If the body temperature drops about 10℃
below the triggered temperature, the driver will restore automatically.
15-3 Over current protection circuit
This works when abnormal current inside the driver occurred by mis-wiring or short-circuiting etc.
has been detected.
15-4 Low voltage protection circuit
The driver has a built-in low voltage protection circuit to prevent current overload. The low supply
voltage condition normally occurs when power is turned ON.
１６．Consumption Current
The current consumed by driver and motor varies, depending on the supply voltage, pulse (clock)
frequency, motor’s inductance, rated current and holding torque. Also, the ripple according to the
cycle of PWM (50kHz) and RPM is added into the consumption current. Please use the power
supply which current is more than 1.2 times the rated current of the motor as a standard.
If other devices share the same power supply and voltage change can’t be allowed, then use the
power supply which can flow 1.7 times of the max value of the supply current, or incorporate a large
capacitor.
！
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17. Relationship between Frequency and Motor speed 18. Dimensions
12
１７．Relationship between Frequency(pps) and Motor speed(rpm)
“pps” is about pulse speed and stands for the number of pulses per second.
Formula to calculate rpm:
Step Angle／Microstep resolution(M)×Frequency×60
Motor speed(rpm)＝─────────────────────────
360(degree)
Example
Step Angle: 1.8degree, Microstep resolution(M): 50, Frequency: 50,000pps
1.8／50×50,000×60
Motor speed(rpm)＝──────────＝ 300 rpm
360
１８．Dimensions
Fig.19. Dimensions
95mm(3.74")
105mm(4.13")
79mm(3.11")
M4
30mm(1.18")
56mm(2.2")
22mm(0.87")
27.5mm(1.08")
4mm(0.16")
GND
CA
CB
A
A
B
B
010010
1
0000
1
0
0
0
0
1
1
0
0
0
1
0
1
0
0
0
0
11
1
0
DC
５
0
5025
1
64
1
1
－＋ Ｓ
Ｌ－＋
RUN STOP
ALARM
CLOCKOUT
GROWOUT
GND
SPEED
CW/CCW
STOP/START
GND
80
DIVISION
CURRENT
18V
-
40V LOW
SPEED GROW
TIME HIGH
SPEED
1
－Ｄ１
－Ｄ２
－Ｄ３
－Ｄ４
－Ｄ５
３Ａ
0-1
1.5A
RD-323MS
2P MICRO STEP DRIVER
MADE IN
JAPAN
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19. Difference from RD-323MS and RD-323M50(M10)
RD-323MS 13
１９．Difference from RD-323MS and RD-323M50(M10)
Especially we’d like the persons who use RD-323M50 before to read this section.
19-1 Difference of wave form
Driver Terminal Wave Form
RD-323M50 CLOCK OUT
(2P)
RD-323MS CLOCK OUT
However, CLOCK OUT MIC in RD-323M50 has no error,
because it is the same duty(50%) as RD-323MS.
19-2 Stop position error (at low speed)
Driver Wave Form
Internal
oscillation
RD-323MS
CLOCK OUT
(resolution:M8)
Stop position error described in here is the difference of the position when the driver was stopped at
CW ration and CCW.
This is because clock out of RD-323MS is the signal de-multiplied internal oscillation and motor is
always running in microstep mode.
Basic step angle
Stop position error＝──────── M: Number of pulse output per basic step angle
2M
(Example) Stop position error of 1.8ﾟmotor is as follows:
D5 D4 D3 D2 D1 Clockout
Resolution Microstep
Resolution(M) Stop position error A＋B
０ １ １ １ ０ １ ６４ 0.9ﾟ64 pulses
０ １ １ Ｘ １ ２ ６４ 0.45ﾟ32 pulses
１ ０ １ １ ０ ５ ８０ 0.18ﾟ16 pulses
０ ０ １ ０ １ ２５ ５０ 0.036ﾟ2 pulses
However, in case of M50, M64, M80, stop position error doesn’t occur.
20μsec min.
A B
DUTY≒40～60%
(A：B＝4：6～6：4)
ccw cw
A B
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RCD 020201
＊All RORZE products come with a 24-month guarantee.
＊Specifications and products are subject to change without any obligation on the part of the manufacturer.
RORZE CORPORATION
◆Head Office (Japan)
1588 Michinoue, Kannabe-cho, Fukayasu-gun, Hiroshima
720-2104, Japan
Phone: ＋81-84-960-0001
Fax: ＋81-84-960-0200
E-mail address: sales@rorze.com
Home page address: http://www.rorze.com
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